<rdf:RDF xmlns:community="http://www.bibsonomy.org/ontologies/2008/05/community#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:admin="http://webns.net/mvcb/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:syn="http://purl.org/rss/1.0/modules/syndication/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:taxo="http://purl.org/rss/1.0/modules/taxonomy/" xmlns:cc="http://web.resource.org/cc/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:swrc="http://swrc.ontoware.org/ontology#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns="http://purl.org/rss/1.0/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xml:base="http://www.bibsonomy.org/tag/summerschool"><owl:Ontology rdf:about=""><rdfs:comment>BibSonomy publications for /tag/summerschool</rdfs:comment><owl:imports rdf:resource="http://swrc.ontoware.org/ontology/portal"/></owl:Ontology><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2f15cc7613101babb2c3ed1927e35213a/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2f15cc7613101babb2c3ed1927e35213a/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2007/aicomm_2007_folksonomy_clustering.pdf"/><swrc:date>Wed May 21 10:23:17 CEST 2008</swrc:date><swrc:journal>AI Communications</swrc:journal><swrc:number>4</swrc:number><swrc:pages>245 - 262</swrc:pages><swrc:title>Network Properties of Folksonomies</swrc:title><swrc:volume>20</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>network summerschool folksonomies 2007 kdubiq myown sosbuch properties </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="67" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Ciro Cattuto"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andrea Baldassarri"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Vito D. P. Servedio"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Vittorio Loreto"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Andreas Hotho"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Miranda Grahl"/></rdf:_7><rdf:_8><swrc:Person swrc:name="Gerd Stumme"/></rdf:_8></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/29ca2aaddb6c594baeef983301ff13a8f/kdubiq"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/29ca2aaddb6c594baeef983301ff13a8f/kdubiq"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2007/aicomm_2007_folksonomy_clustering.pdf"/><swrc:date>Wed Apr 30 12:59:47 CEST 2008</swrc:date><swrc:journal>AI Communications</swrc:journal><swrc:number>4</swrc:number><swrc:pages>245 - 262</swrc:pages><swrc:title>Network Properties of Folksonomies</swrc:title><swrc:volume>20</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>network myown summerschool folksonomies 2007 kdubiq sosbuch properties </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="67" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Ciro Cattuto"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andre Baldassarri"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Vito D. P. Servedio"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Vittorio Loreto"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Andreas Hotho"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Miranda Grahl"/></rdf:_7><rdf:_8><swrc:Person swrc:name="Gerd Stumme"/></rdf:_8></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/26929599cc8fbdc408282907eeec37204/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/26929599cc8fbdc408282907eeec37204/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.cs.vu.nl/~pmika/research/papers/ISWC-folksonomy.pdf"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:booktitle>International Semantic Web Conference</swrc:booktitle><swrc:pages>522-536</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>LNCS</swrc:series><swrc:title>Ontologies Are Us: A Unified Model of Social Networks and Semantics</swrc:title><swrc:year>2005</swrc:year><swrc:keywords>sosbuch summerschool tagging kdubiq web folksonomy ontology clustering 2.0 socialsoftware </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="2006.01.19" swrc:key="timestamp"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="http://dx.doi.org/10.1007/11574620_38" swrc:key="ee"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="DBLP, http://dblp.uni-trier.de" swrc:key="bibsource"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="mlux" swrc:key="owner"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1007/11574620_38" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Peter Mika"/></rdf:_1></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/23b4ce6fd7fa6dbf1c39fd261fa39fcd6/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/23b4ce6fd7fa6dbf1c39fd261fa39fcd6/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#TechnicalReport"/><owl:sameAs rdf:resource="http://dbpubs.stanford.edu:8090/pub/2006-10"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:institution><swrc:Organization swrc:name="Computer Science Department"/></swrc:institution><swrc:month>April</swrc:month><swrc:number>2006-10</swrc:number><swrc:school><swrc:University swrc:name="Standford University"/></swrc:school><swrc:title>Collaborative Creation of Communal Hierarchical Taxonomies in Social Tagging Systems</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>folksonomy collaborative sosbuch tagging kdubiq clustering taxonomy social summerschool </swrc:keywords><swrc:abstract>Collaborative tagging systems---systems where many casual users annotate objects with free-form strings (tags) of their choosing---have recently emerged as a powerful way to label and organize large collections of data. During our recent investigation into these types of systems, we discovered a simple but remarkably effective algorithm for converting a large corpus of tags annotating objects in a tagging system into a navigable hierarchical taxonomy of tags. We first discuss the algorithm and then present a preliminary model to explain why it is so effective in these types of systems.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="739394" swrc:key="id"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="3" swrc:key="priority"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Paul Heymann"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Hector Garcia-Molina"/></rdf:_2></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2dd848b212f249f3aa591ee4c8835c2c2/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2dd848b212f249f3aa591ee4c8835c2c2/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.pui.ch/phred/automated_tag_clustering/"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:journal>WWW2006, May</swrc:journal><swrc:pages>22--26</swrc:pages><swrc:title>{Automated Tag Clustering: Improving search and exploration in the tag space}</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>toread kdubiq sosbuch tagging summerschool clustering </swrc:keywords><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="G. Begelman"/></rdf:_1><rdf:_2><swrc:Person swrc:name="P. Keller"/></rdf:_2><rdf:_3><swrc:Person swrc:name="F. Smadja"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/249719d13c6da0c5f6917b97ef777184e/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/249719d13c6da0c5f6917b97ef777184e/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:booktitle>Proceedings of the Collaborative Web Tagging Workshop at the WWW 2006</swrc:booktitle><swrc:title>Towards the Semantic Web: Collaborative Tag Suggestions</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>summerschool sosbuch tagging recommender kdubiq folksonomy </swrc:keywords><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Zhichen Xu"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Yun Fu"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Jianchang Mao"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Difu Su"/></rdf:_4></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2f9a6e80c21b1266491d2509ca0b88eea/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2f9a6e80c21b1266491d2509ca0b88eea/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:address>Hong Kong</swrc:address><swrc:booktitle>Proc. 6th ICDM conference</swrc:booktitle><swrc:month>December</swrc:month><swrc:title>TRIAS - An Algorithm for Mining Iceberg Tri-Lattices</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>kdubiq trias 2006 sosbuch myown summerschool mining fca </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="1550-4786" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="0-7695-2701-9" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="19" swrc:key="vgwort"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="http://doi.ieeecomputersociety.org/10.1109/ICDM.2006.162" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Robert Jäschke"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Bernhard Ganter"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Gerd Stumme"/></rdf:_5></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/27da1127fc4836e2cf58e3073f1b888b2/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/27da1127fc4836e2cf58e3073f1b888b2/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2006/seach2006hotho_eswc.pdf"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:address>Budva, Montenegro</swrc:address><swrc:booktitle>Proceedings of the 3rd European Semantic Web Conference </swrc:booktitle><swrc:month>June</swrc:month><swrc:pages>411-426</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>LNCS</swrc:series><swrc:title>Information Retrieval in Folksonomies: Search and Ranking</swrc:title><swrc:volume>4011</swrc:volume><swrc:year>2006</swrc:year><swrc:keywords>search seminar2006 definition sosbuch ir folkrank 2006 summerschool pagerank myown folksonomy rank ranking kdubiq bibsonomy </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="3-540-34544-2" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="29" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Andreas Hotho"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Jäschke"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Gerd Stumme"/></rdf:_4></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2c8dbb6371be8d67e3aa1928bd3dd0fed/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2c8dbb6371be8d67e3aa1928bd3dd0fed/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2006/schmitz2006asso_ifcs.pdf"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:address>Ljubljana</swrc:address><swrc:booktitle>Data Science and Classification (Proc. IFCS 2006 Conference)</swrc:booktitle><swrc:month>July</swrc:month><swrc:pages>261-270</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>Studies in Classification, Data Analysis, and Knowledge Organization</swrc:series><swrc:title>Mining Association Rules in Folksonomies</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>sosbuch semantic myown association summerschool kdubiq analysis 2006 network seminar2006 folksonomy rules </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="978-3-540-34415-5" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="18" swrc:key="vgwort"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1007/3-540-34416-0_28" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Gerd Stumme"/></rdf:_4></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="V. Batagelj"/></rdf:_1><rdf:_2><swrc:Person swrc:name="H.-H. Bock"/></rdf:_2><rdf:_3><swrc:Person swrc:name="A. Ferligoj"/></rdf:_3><rdf:_4><swrc:Person swrc:name="A. Žiberna"/></rdf:_4></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2b8b87c78e9e27a44aacde0402c642bff/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2b8b87c78e9e27a44aacde0402c642bff/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2007/Tag_Recommender_in_Folksonomies_final.pdf"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:booktitle>Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Warsaw, Poland, September 17-21, 2007, Proceedings</swrc:booktitle><swrc:pages>506-514</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>Lecture Notes in Computer Science</swrc:series><swrc:title>Tag Recommendations in Folksonomies</swrc:title><swrc:volume>4702</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>tagging sosbuch recommender myown folksonomy pagerank 2007 social summerschool kdubiq </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="http://dx.doi.org/10.1007/978-3-540-74976-9_52" swrc:key="ee"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="DBLP, http://dblp.uni-trier.de" swrc:key="bibsource"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="978-3-540-74975-2" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="20" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Robert Jäschke"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Leandro Balby Marinho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andreas Hotho"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Lars Schmidt-Thieme"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Gerd Stumme"/></rdf:_5></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Joost N. Kok"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Jacek Koronacki"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Ramon López de Mántaras"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Stan Matwin"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Dunja Mladenic"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Andrzej Skowron"/></rdf:_6></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/29ca2aaddb6c594baeef983301ff13a8f/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/29ca2aaddb6c594baeef983301ff13a8f/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2007/aicomm_2007_folksonomy_clustering.pdf"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:journal>AI Communications</swrc:journal><swrc:number>4</swrc:number><swrc:pages>245 - 262</swrc:pages><swrc:title>Network Properties of Folksonomies</swrc:title><swrc:volume>20</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>kdubiq network summerschool sosbuch folksonomies 2007 myown properties </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="67" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Ciro Cattuto"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andre Baldassarri"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Vito D. P. Servedio"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Vittorio Loreto"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Andreas Hotho"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Miranda Grahl"/></rdf:_7><rdf:_8><swrc:Person swrc:name="Gerd Stumme"/></rdf:_8></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/sosbuch"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/sosbuch"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Tue Feb 12 17:53:57 CET 2008</swrc:date><swrc:address>Graz, Austria</swrc:address><swrc:booktitle>7th International Conference on Knowledge Management (I-KNOW &#039;07)</swrc:booktitle><swrc:month>SEP</swrc:month><swrc:pages>356-364</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Know-Center"/></swrc:publisher><swrc:title>Conceptual Clustering of Social Bookmarking Sites</swrc:title><swrc:year>2007</swrc:year><swrc:keywords>summerschool sosbuch social kdubiq tagging bookmarking folksonomy conceptual clustering myown 2007 </swrc:keywords><swrc:abstract>Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the
system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="0948-695x" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="14" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Miranda Grahl"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Gerd Stumme"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Fri Feb 01 09:28:11 CET 2008</swrc:date><swrc:address>Graz, Austria</swrc:address><swrc:booktitle>7th International Conference on Knowledge Management (I-KNOW &#039;07)</swrc:booktitle><swrc:month>SEP</swrc:month><swrc:pages>356-364</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Know-Center"/></swrc:publisher><swrc:title>Conceptual Clustering of Social Bookmarking Sites</swrc:title><swrc:year>2007</swrc:year><swrc:keywords>social conceptual tagging summerschool myown 2007 kdubiq sosbuch bookmarking clustering folksonomy </swrc:keywords><swrc:abstract>Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the
system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="0948-695x" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="14" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Miranda Grahl"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Gerd Stumme"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2ad31989b2393f5d0c4e8be8dbb613141/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2ad31989b2393f5d0c4e8be8dbb613141/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://dblp.uni-trier.de/db/conf/lwa/lwa2007.html#BenzH07"/><swrc:date>Fri Feb 01 09:19:11 CET 2008</swrc:date><swrc:booktitle>LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007, Workshop Proceedings (LWA)</swrc:booktitle><swrc:crossref>conf/lwa/2007</swrc:crossref><swrc:pages>109-112</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Martin-Luther-University Halle-Wittenberg"/></swrc:publisher><swrc:title>Position Paper: Ontology Learning from Folksonomies.</swrc:title><swrc:year>2007</swrc:year><swrc:keywords>2007 myown kdubiq ontology learning folksonomy summerschool </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="978-3-86010-907-6" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="16" swrc:key="vgwort"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="2007-11-16" swrc:key="date"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Alexander Hinneburg"/></rdf:_1></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2b8b87c78e9e27a44aacde0402c642bff/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2b8b87c78e9e27a44aacde0402c642bff/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/hotho/pub/2007/Tag_Recommender_in_Folksonomies_final.pdf"/><swrc:date>Thu Jan 31 12:17:28 CET 2008</swrc:date><swrc:booktitle>Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Warsaw, Poland, September 17-21, 2007, Proceedings</swrc:booktitle><swrc:pages>506-514</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>Lecture Notes in Computer Science</swrc:series><swrc:title>Tag Recommendations in Folksonomies</swrc:title><swrc:volume>4702</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>social 2007 tagging myown sosbuch kdubiq summerschool recommender folksonomy pagerank </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="http://dx.doi.org/10.1007/978-3-540-74976-9_52" swrc:key="ee"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="DBLP, http://dblp.uni-trier.de" swrc:key="bibsource"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="978-3-540-74975-2" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="20" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Robert Jäschke"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Leandro Balby Marinho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andreas Hotho"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Lars Schmidt-Thieme"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Gerd Stumme"/></rdf:_5></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Joost N. Kok"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Jacek Koronacki"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Ramon López de Mántaras"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Stan Matwin"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Dunja Mladenic"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Andrzej Skowron"/></rdf:_6></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2e5eba80e58b4532a3fd3bcf50994734e/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2e5eba80e58b4532a3fd3bcf50994734e/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://portal.acm.org/citation.cfm?id=1276056"/><swrc:date>Fri Jan 25 20:42:37 CET 2008</swrc:date><swrc:address>Amsterdam, The Netherlands, The Netherlands</swrc:address><swrc:journal>Future Gener. Comput. Syst.</swrc:journal><swrc:number>1</swrc:number><swrc:pages>69--75</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Elsevier Science Publishers B. V."/></swrc:publisher><swrc:title>Distributed feature extraction in a p2p setting: a case study</swrc:title><swrc:volume>23</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>tagging mining music dm web summerschool 2.0 p2p kdubiq </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="0167-739X" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="http://dx.doi.org/10.1016/j.future.2006.04.004" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Michael Wurst"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Katharina Morik"/></rdf:_2></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2341d19e74e2cce2ea9d5a94df8b48873/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2341d19e74e2cce2ea9d5a94df8b48873/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Fri Jan 25 20:39:18 CET 2008</swrc:date><swrc:address>Berlin--Heidelberg--New~York</swrc:address><swrc:booktitle>Conceptual structures: applications, implementation and theory</swrc:booktitle><swrc:number>954</swrc:number><swrc:pages>32-43</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer--Verlag"/></swrc:publisher><swrc:series>Lecture Notes in Artificial Intelligence</swrc:series><swrc:title>A triadic approach to formal concept analysis</swrc:title><swrc:year>1995</swrc:year><swrc:keywords>summerschool fca triadic kdubiq </swrc:keywords><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Fritz Lehmann"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Rudolf Wille"/></rdf:_2></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="G. Ellis"/></rdf:_1><rdf:_2><swrc:Person swrc:name="R. Levinson"/></rdf:_2><rdf:_3><swrc:Person swrc:name="W. Rich"/></rdf:_3><rdf:_4><swrc:Person swrc:name="J. F. Sowa"/></rdf:_4></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/21671b75099da5291bf20aefe0d22f3b4/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/21671b75099da5291bf20aefe0d22f3b4/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/stumme/papers/2005/stumme2005finite.pdf"/><swrc:date>Fri Jan 25 20:38:47 CET 2008</swrc:date><swrc:address>Heidelberg</swrc:address><swrc:booktitle>Proc. 3rd Intl. Conf. on Formal Concept Analysis</swrc:booktitle><swrc:pages>315-328</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:series>Lecture Notes in Computer Science</swrc:series><swrc:title>A Finite State Model for On-Line Analytical Processing in
               Triadic Contexts</swrc:title><swrc:volume>3403</swrc:volume><swrc:year>2005</swrc:year><swrc:keywords>summerschool triadic olap fca 2005 folksonomies kdubiq </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="http://springerlink.metapress.com/openurl.asp?genre=article{\&amp;" swrc:key="ee"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="DBLP, http://dblp.uni-trier.de" swrc:key="bibsource"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="3-540-24525-1" swrc:key="isbn"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Gerd Stumme"/></rdf:_1></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Bernhard Ganter"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Godin"/></rdf:_2></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2582641c05e7a0b9396945a951822c83f/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2582641c05e7a0b9396945a951822c83f/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://portal.acm.org/citation.cfm?id=1180904"/><swrc:date>Fri Jan 25 19:57:49 CET 2008</swrc:date><swrc:address>New York, NY, USA</swrc:address><swrc:booktitle>CSCW &#039;06: Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work</swrc:booktitle><swrc:pages>181--190</swrc:pages><swrc:publisher><swrc:Organization swrc:name="ACM"/></swrc:publisher><swrc:title>tagging, communities, vocabulary, evolution</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>tag summerschool analysis kdubiq evolution vocabulary tagging </swrc:keywords><swrc:abstract>A tagging community&#039;s vocabulary of tags forms the basis for social navigation and shared expression.We present a user-centric model of vocabulary evolution in tagging communities based on community influence and personal tendency. We evaluate our model in an emergent tagging system by introducing tagging features into the MovieLens recommender system.We explore four tag selection algorithms for displaying tags applied by other community members. We analyze the algorithms &#039;effect on vocabulary evolution, tag utility, tag adoption, and user satisfaction.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="Banff, Alberta, Canada" swrc:key="location"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="1-59593-249-6" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="http://doi.acm.org/10.1145/1180875.1180904" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Shilad Sen"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Shyong K. Lam"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Al Mamunur Rashid"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Dan Cosley"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Dan Frankowski"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Jeremy Osterhouse"/></rdf:_6><rdf:_7><swrc:Person swrc:name="F. Maxwell Harper"/></rdf:_7><rdf:_8><swrc:Person swrc:name="John Riedl"/></rdf:_8></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/22fe2537d42bd46b0a31a25c125eb865d/hotho"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/22fe2537d42bd46b0a31a25c125eb865d/hotho"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="/brokenurl#citeseer.nj.nec.com/francis96bootstrapping.html"/><swrc:date>Fri Jan 25 19:51:15 CET 2008</swrc:date><swrc:journal>Kybernetes</swrc:journal><swrc:number>5/6</swrc:number><swrc:pages>691--722</swrc:pages><swrc:title>Bootstrapping knowledge representations: from entailment meshes via semantic nets to learning webs</swrc:title><swrc:volume>30</swrc:volume><swrc:year>2001</swrc:year><swrc:keywords>learning summerschool semantic kdubiq folksonomy ontology </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="meh: general ontology, knowledge structures" swrc:key="comment"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Francis Heylighen"/></rdf:_1></rdf:Seq></swrc:author></rdf:Description><foaf:Group rdf:about="http://www.bibsonomy.org/tag/summerschool"><foaf:name>summerschool</foaf:name><description>Community for tag(s) summerschool</description></foaf:Group></rdf:RDF>